Remove unnecessary 'virtual' annotation from mojo

mojo/public/tools/bindings/generators/cpp_templates/interface_definition.tmpl

Index: mojo/public/tools/bindings/generators/cpp_templates/interface_definition.tmpl
diff --git a/mojo/public/tools/bindings/generators/cpp_templates/interface_definition.tmpl b/mojo/public/tools/bindings/generators/cpp_templates/interface_definition.tmpl
index 44d1428d00340edc9472a5e6f2bcba0a5854eca5..5214df9cfcc6bfb2cc8645ce8c53ff5f9b5080f8 100644
--- a/mojo/public/tools/bindings/generators/cpp_templates/interface_definition.tmpl
+++ b/mojo/public/tools/bindings/generators/cpp_templates/interface_definition.tmpl
@@ -46,7 +46,7 @@ class {{class_name}}_{{method.name}}_ForwardToCallback
       const {{class_name}}::{{method.name}}Callback& callback)
       : callback_(callback) {
   }
-  virtual bool Accept(mojo::Message* message) override;
+  bool Accept(mojo::Message* message) override;
  private:
   {{class_name}}::{{method.name}}Callback callback_;
   MOJO_DISALLOW_COPY_AND_ASSIGN({{class_name}}_{{method.name}}_ForwardToCallback);
@@ -129,7 +129,7 @@ class {{class_name}}_{{method.name}}_ProxyToResponder
         was_run_(false) {
   }
 
-  virtual void Run({{interface_macros.declare_params("in_", method.response_parameters)}}) const override;
+  void Run({{interface_macros.declare_params("in_", method.response_parameters)}}) const override;
 
  private:
   uint64_t request_id_;